Flag changed purchases, compare promotion pay. Every one is ready to run, and you can adjust it in plain language.
Spot unrequested copy and layout changes in revised proofs.
See whether the requested proof fix landed and what else changed, right in the review thread before you approve the revision.
Check revised page proofs against edits requested on the earlier version.
See which proof changes are complete and which still need work. Your team gets a fix list in the review thread.